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Wireless power receiving device, wireless power transmitting device, wireless earphone, LED device, and wireless power transmitting and receiving system

A power receiving device and wireless technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of increased charging demand, troublesome connector connection, etc., and achieve the effect of miniaturization and low cost

Pending Publication Date: 2022-04-26
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In portable devices such as portable terminals, miniaturization and thinning are progressing, but on the other hand, connector connection during charging is cumbersome, and the demand for charging using wireless power supply is increasing

Method used

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  • Wireless power receiving device, wireless power transmitting device, wireless earphone, LED device, and wireless power transmitting and receiving system
  • Wireless power receiving device, wireless power transmitting device, wireless earphone, LED device, and wireless power transmitting and receiving system
  • Wireless power receiving device, wireless power transmitting device, wireless earphone, LED device, and wireless power transmitting and receiving system

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Embodiment Construction

[0029]

[0030] figure 1 It is a diagram showing the configuration of the power transmission and reception system 100 according to the first embodiment.

[0031] Such as figure 1 As shown, the power transmission and reception system 100 is a system in which power is supplied from a wireless power transmission device (hereinafter abbreviated as "power transmission device") 101 to a wireless power reception device (hereinafter abbreviated as "power reception device") 102 . The power transmission device 101 includes: an RFID reader (constructed to include an oscillator 111, a power transmission amplifier 112, an RFID amplifier 113 for transmitting power for reading RFID, an RFID modulation circuit for writing RFID 114, the RFID demodulation circuit 121) that demodulates the modulated data signal from the RFID responder; the first switching switch 115; the circulator (circulator) 116, which separates the transmission and the RFID reader on the power transmission side according ...

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PUM

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Abstract

An RFID responder and a beacon signal oscillator are mounted in a wireless power receiving device, and an RFID response is transmitted when there is no power necessary for transmission of a beacon signal. The wireless power transmission device operates in a wide-area power transmission mode in which power is transmitted at a wide angle in the direction in which the RFID response is received. The wireless power receiving device receives power in a wide-area power transmission mode, and transmits a beacon signal when the beacon signal can be transmitted. The wireless power transmission device operates in a concentrated power transmission mode in which power is transmitted at a narrower angle in the direction in which the beacon signal is received. In the centralized power transmission mode, beacon signals are periodically transmitted and received, and the positions of the wireless power receiving device and the wireless power transmitting device are confirmed.

Description

technical field [0001] The present invention relates to a wireless power receiving device, a wireless power transmitting device, and a wireless power transmitting and receiving technology using them. Wireless power supply technology for sensors such as bodies and the like. Background technique [0002] In portable devices such as portable terminals, miniaturization and thinning are progressing, but on the other hand, connector connection during charging is cumbersome, and the demand for charging by wireless power supply is increasing. In wireless power feeding, a method using radio waves such as microwaves, an electromagnetic induction method using magnetic field coupling, and the like have been studied. Among them, the electromagnetic induction method has a high transmission efficiency of about 90% in the transmission efficiency of the coil used for power transmission and reception although the transmission distance is about several centimeters, so the commercialization of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/20H02J50/27H04B5/48
CPCH02J50/20H05B45/30H04R1/1025H04R2420/07H04R1/1041H04R1/1016H02J7/00034H02J50/80H02J50/402H02J50/27H02J7/00712
Inventor 市川胜英矢作保夫秋山仁
Owner MAXELL HLDG LTD